[PATCHSET 0/5 v2] brd: partition fixes

From: Boaz Harrosh
Date: Wed Aug 27 2014 - 11:29:36 EST

Jens Hi

What do you intend to do with these fixes? These are real bugs on devices
shipped for a while now. I think they need to go into current 3.17-rcX Kernel.

If not then lets please put them in for-next
[This set is for linux-block.git/for-next, tell me if you need one ontop
of for-linus]

Based on Jens's linux-next [30e996a] incorporating the brd patch by Dmitry Monakhov.
Dmitry has introduced a new part_show parameter, this parameter is now removed
and we always "part_show=1".
Scripts that did part_show=1 will work just the same but will display a
message in logs. This is harmless. (And scripts can be modified to
remove this parameter)

Current situation is that any attempt to use partitions with brd device would
create the partition but then any use will trash the data.

See: http://www.spinics.net/lists/linux-scsi/msg76737.html

So these patches fixes up all the problems we saw with the code, but not sacrificing
any of the old fixtures. See [patch 4/5] for more explanations.

list of patches:
[PATCH 1/5] axonram: Fix bug in direct_access
[PATCH 2/5] Change direct_access calling convention

These are Matthew's patches from the DAX series which fixes the interface to
direct_access taking into account the partition offset. It must be applied
here for partitions to work with direct_access() API.

[PATCH 3/5] brd: Add getgeo to block ops

This one is needed by fdisk, otherwise it just asks extra questions

[PATCH 4/5] brd: Fix all partitions BUGs
[PATCH 5/5] brd: Request from fdisk 4k alignment


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